If you're passionate about IT and electronics , like being up to date on technology and don't miss even the slightest details, buy MonoMode SFP Fibre Module TP-Link TL-SM321B 10 km 1.25 Gbps at an unbeatable price. The TL-SM321B single-mode fiber SFP module from TP-Link is an essential component for expanding and optimizing fiber optic networks. Designed according to the 1000Base-BX bidirectional WDM standard, this module enables data transmission at 1.25 Gbps using a single fiber strand with a 9/125 μm optical fiber structure, significantly reducing infrastructure costs by requiring less cabling. Thanks to its WDM (Wavelength Division Multiplexing) technology, the TL-SM321B uses different wavelengths to send and receive signals, allowing simultaneous two-way communication over a single fiber strand—ideal for setups prioritizing resource efficiency and cost savings. This module is made in a black and gray color scheme to facilitate identification and handling in compatible SFP devices that accept this format, commonly used in TP-Link routers, switches, and media converters. Its ability to extend connection distances up to 10 kilometers makes it a reliable solution for enterprise networks or telecom installations requiring high-speed, stable long-distance links. Compatibility with SFP interfaces ensures easy and flexible integration into network environments demanding high speed and transmission robustness. Overall, the TL-SM321B is a solid technical choice for those looking to expand or upgrade single-mode fiber optic infrastructures, benefiting from a proven, efficient standard that optimizes resources and guarantees optimal performance. This module offers a balanced solution in terms of technology and cost for network infrastructures requiring secure and continuous professional data transmission. Type: Fibre optic 9/125 μm MonoMode SFP Fibre Module AC input voltage: 3.3 V Range: 10 km Speed: 1.25 Gbps Wavelength: 1550nm Tx/1310nm Rx Po